5 Maintenance and troubleshooting
35
Fault word
ID
Name of failure /
alarm
Fault/alarm reason
Troubleshooting
Hardware
fault status
word
0
Hardware overcurrent
(secondary)
Inductor current peak
exceeds hardware protection
threshold
1. Normal work after resetting.
2. If it occurs frequently, please
contact the Hopewind technician.
3
Phase A hardware
overcurrent
Phase A inductor current
triggers wave-by-wave
current limiting protection
1. Normal work after resetting.
2. If it occurs frequently, please
contact the Hopewind technician.
4
Phase B hardware
overcurrent
Phase B inductor current
triggers wave-by-wave
current limiting protection
1. Normal work after resetting.
2. If it occurs frequently, please
contact the Hopewind technician.
5
Phase C hardware
overcurrent
Phase C inductor current
triggers wave-by-wave
current limiting protection
1. Normal work after resetting.
2. If it occurs frequently, please
contact the Hopewind technician.
6
Busbar hardware
overvoltage
Bus voltage exceeds
hardware overvoltage
threshold
1. Normal work after resetting.
2. If it occurs frequently, please
contact the Hopewind technician.
7
Busbar midpoint
overvoltage
Bus midpoint voltage exceeds
hardware overvoltage
threshold
1. Normal work after resetting.
2. If it occurs frequently, please
contact the Hopewind technician.
Grid fault
status word
0
Grid AB line voltage
overvoltage
The AB line voltage of the
power grid exceeds the
overvoltage point set by the
system.
1, confirm whether the sampling of
the inverter grid voltage is normal.
2, confirm the failure time, whether
the AC side such as box change
tripping and other failures.
3, confirm whether the inverter has
undergone high voltage ride
through.
1
Grid BC line voltage
overvoltage
The BC line voltage of the
power grid exceeds the
overvoltage point set by the
system.
1, confirm whether the sampling of
the inverter grid voltage is normal.
2, confirm the failure time, whether
the AC side such as box change
tripping and other failures.
3, confirm whether the inverter has
undergone high voltage ride
through.
2
Grid CA line voltage
overvoltage
The CA line voltage of the
power grid exceeds the
overvoltage point set by the
system.
1, confirm whether the sampling of
the inverter grid voltage is normal.
2, confirm the failure time, whether
the AC side such as box change
tripping and other failures.
3, confirm whether the inverter has
undergone high voltage ride
through.
3
AB line voltage
undervoltage
The grid AB line voltage is
lower than the undervoltage
point set by the system.
1. Confirm whether the inverter grid
voltage sampling is normal;
2. Confirm whether the inverter has
a phase loss or whether the box
change contacts are suitable.
4
BC line voltage
undervoltage
The grid BC line voltage is
lower than the undervoltage
point set by the system.
11. Confirm whether the inverter
grid voltage sampling is normal;
2. Confirm whether the inverter has
a phase loss or whether the box
change contacts are suitable.
5
CA line voltage
undervoltage
The grid CA line voltage is
lower than the undervoltage
point set by the system.
1. Confirm whether the inverter grid
voltage sampling is normal;
2. Confirm whether the inverter has
a phase loss or whether the box
change contacts are suitable.
6
Grid abnormality
Grid frequency and voltage
exceed system setting range
1. Confirm whether the access to
the grid is the nominal grid of the
inverter;
2. Confirm whether the grid is
connected
7
Grid voltage imbalance
exceeds limit
Grid voltage imbalance
exceeds system threshold
Confirm whether the grid is
abnormal
